/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:13:08,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:13:08,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:13:08,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:13:08,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:13:08,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:13:08,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:13:08,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:13:08,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:13:08,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:13:08,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:13:08,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:13:08,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:13:08,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:13:08,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:13:08,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:13:08,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:13:08,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:13:08,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:13:08,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:13:08,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:13:08,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:13:08,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:13:08,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:13:08,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:13:08,829 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:13:08,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:13:08,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:13:08,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:13:08,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:13:08,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:13:08,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:13:08,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:13:08,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:13:08,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:13:08,837 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:13:08,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:13:08,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:13:08,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:13:08,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:13:08,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:13:08,842 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:13:08,875 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:13:08,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:13:08,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:13:08,878 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:13:08,878 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:13:08,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:13:08,878 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:13:08,879 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:13:08,879 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:13:08,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:13:08,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:13:08,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:13:08,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:13:08,880 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:13:08,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:13:08,880 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:13:08,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:13:08,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:13:08,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:13:08,881 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:13:08,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:13:08,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:13:08,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:13:08,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:13:08,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:13:08,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:13:08,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:13:08,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:13:08,883 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:13:08,883 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:13:09,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:13:09,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:13:09,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:13:09,400 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:13:09,401 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:13:09,405 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label03.c [2020-10-28 12:13:09,500 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/11d644df5/8d34ede4e3c240b396491dc6f89399cf/FLAG6162ee54f [2020-10-28 12:13:10,630 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:13:10,631 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label03.c [2020-10-28 12:13:10,676 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/11d644df5/8d34ede4e3c240b396491dc6f89399cf/FLAG6162ee54f [2020-10-28 12:13:11,117 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/11d644df5/8d34ede4e3c240b396491dc6f89399cf [2020-10-28 12:13:11,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:13:11,127 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:13:11,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:13:11,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:13:11,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:13:11,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:13:11" (1/1) ... [2020-10-28 12:13:11,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4024b2fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:13:11, skipping insertion in model container [2020-10-28 12:13:11,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:13:11" (1/1) ... [2020-10-28 12:13:11,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:13:11,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:13:12,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:13:12,827 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:13:13,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:13:13,567 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:13:13,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:13:13 WrapperNode [2020-10-28 12:13:13,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:13:13,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:13:13,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:13:13,570 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:13:13,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:13:13" (1/1) ... [2020-10-28 12:13:13,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:13:13" (1/1) ... [2020-10-28 12:13:13,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:13:13" (1/1) ... [2020-10-28 12:13:13,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:13:13" (1/1) ... [2020-10-28 12:13:13,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:13:13" (1/1) ... [2020-10-28 12:13:13,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:13:13" (1/1) ... [2020-10-28 12:13:13,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:13:13" (1/1) ... [2020-10-28 12:13:13,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:13:13,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:13:13,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:13:13,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:13:13,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:13:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:13:14,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:13:14,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:13:14,036 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:13:14,036 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:13:14,036 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:13:14,036 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:13:14,036 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:13:14,037 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:13:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:13:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:13:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:13:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:13:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:13:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:13:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:13:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:13:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:13:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:13:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:13:14,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:13:14,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:13:14,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:13:14,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:13:14,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:13:14,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:13:20,873 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:13:20,873 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:13:20,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:13:20 BoogieIcfgContainer [2020-10-28 12:13:20,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:13:20,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:13:20,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:13:20,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:13:20,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:13:11" (1/3) ... [2020-10-28 12:13:20,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fce5fea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:13:20, skipping insertion in model container [2020-10-28 12:13:20,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:13:13" (2/3) ... [2020-10-28 12:13:20,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fce5fea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:13:20, skipping insertion in model container [2020-10-28 12:13:20,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:13:20" (3/3) ... [2020-10-28 12:13:20,888 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label03.c [2020-10-28 12:13:20,898 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:13:20,904 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:13:20,927 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:13:20,962 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:13:20,962 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:13:20,962 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:13:20,963 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:13:20,963 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:13:20,963 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:13:20,963 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:13:20,963 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:13:21,001 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-28 12:13:21,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 12:13:21,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:21,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:13:21,010 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:21,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:21,018 INFO L82 PathProgramCache]: Analyzing trace with hash 925984196, now seen corresponding path program 1 times [2020-10-28 12:13:21,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:21,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393143778] [2020-10-28 12:13:21,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:21,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:21,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:21,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 12:13:21,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:21,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 542 [2020-10-28 12:13:21,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:21,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:21,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:13:21,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:13:21,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 12:13:21,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:13:21,965 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:13:21,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:21,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:22,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:22,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:22,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:22,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 12:13:22,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:22,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:22,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:22,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:22,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:13:22,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:13:22,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:13:22,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393143778] [2020-10-28 12:13:22,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:13:22,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:13:22,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912706691] [2020-10-28 12:13:22,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:13:22,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:22,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:13:22,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:13:22,081 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-28 12:13:22,261 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:13:33,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:33,256 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-28 12:13:33,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:13:33,258 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-28 12:13:33,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:33,291 INFO L225 Difference]: With dead ends: 2476 [2020-10-28 12:13:33,291 INFO L226 Difference]: Without dead ends: 1569 [2020-10-28 12:13:33,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:13:33,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-28 12:13:33,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-28 12:13:33,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-28 12:13:33,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2834 transitions. [2020-10-28 12:13:33,478 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2834 transitions. Word has length 26 [2020-10-28 12:13:33,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:33,479 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2834 transitions. [2020-10-28 12:13:33,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:13:33,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2834 transitions. [2020-10-28 12:13:33,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-28 12:13:33,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:33,485 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:13:33,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:13:33,485 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:33,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:33,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1825620838, now seen corresponding path program 1 times [2020-10-28 12:13:33,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:33,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147881248] [2020-10-28 12:13:33,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:33,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:33,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:34,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:34,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:13:34,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:13:34,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1240 [2020-10-28 12:13:34,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:34,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:34,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:13:34,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:13:34,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:13:34,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:13:34,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:34,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:34,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:34,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:34,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:34,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:13:34,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:34,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:34,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:34,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:34,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:13:34,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:13:34,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:34,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:35,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:35,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:13:35,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:35,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 12:13:35,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:35,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:35,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:35,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:35,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:13:35,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:13:35,217 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:13:35,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147881248] [2020-10-28 12:13:35,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:13:35,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:13:35,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194517446] [2020-10-28 12:13:35,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:13:35,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:35,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:13:35,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:13:35,224 INFO L87 Difference]: Start difference. First operand 1554 states and 2834 transitions. Second operand 7 states. [2020-10-28 12:13:48,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:48,564 INFO L93 Difference]: Finished difference Result 3978 states and 7198 transitions. [2020-10-28 12:13:48,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:13:48,565 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-10-28 12:13:48,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:48,584 INFO L225 Difference]: With dead ends: 3978 [2020-10-28 12:13:48,584 INFO L226 Difference]: Without dead ends: 2430 [2020-10-28 12:13:48,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:13:48,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2020-10-28 12:13:48,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 2356. [2020-10-28 12:13:48,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2356 states. [2020-10-28 12:13:48,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2356 states to 2356 states and 3820 transitions. [2020-10-28 12:13:48,708 INFO L78 Accepts]: Start accepts. Automaton has 2356 states and 3820 transitions. Word has length 99 [2020-10-28 12:13:48,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:48,709 INFO L481 AbstractCegarLoop]: Abstraction has 2356 states and 3820 transitions. [2020-10-28 12:13:48,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:13:48,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2356 states and 3820 transitions. [2020-10-28 12:13:48,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 12:13:48,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:48,719 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:13:48,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:13:48,720 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:48,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:48,721 INFO L82 PathProgramCache]: Analyzing trace with hash -574039006, now seen corresponding path program 1 times [2020-10-28 12:13:48,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:48,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956403080] [2020-10-28 12:13:48,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:48,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:48,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:49,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:49,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 12:13:49,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:13:49,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 814 [2020-10-28 12:13:49,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:49,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:49,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:49,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:13:49,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 12:13:49,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:13:49,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:49,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:49,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:49,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:49,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:49,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:13:49,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:49,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:49,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:49,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:49,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:49,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:13:49,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:49,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:49,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:49,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:13:49,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:49,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 12:13:49,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:49,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:49,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:49,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:49,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:13:49,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:49,963 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:13:49,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956403080] [2020-10-28 12:13:49,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:49,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:13:49,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029576307] [2020-10-28 12:13:49,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:13:49,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:49,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:13:49,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:13:49,967 INFO L87 Difference]: Start difference. First operand 2356 states and 3820 transitions. Second operand 5 states. [2020-10-28 12:14:02,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:14:02,155 INFO L93 Difference]: Finished difference Result 7106 states and 11698 transitions. [2020-10-28 12:14:02,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:14:02,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-28 12:14:02,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:14:02,183 INFO L225 Difference]: With dead ends: 7106 [2020-10-28 12:14:02,184 INFO L226 Difference]: Without dead ends: 4756 [2020-10-28 12:14:02,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:14:02,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4756 states. [2020-10-28 12:14:02,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4756 to 4738. [2020-10-28 12:14:02,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4738 states. [2020-10-28 12:14:02,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4738 states to 4738 states and 6814 transitions. [2020-10-28 12:14:02,361 INFO L78 Accepts]: Start accepts. Automaton has 4738 states and 6814 transitions. Word has length 101 [2020-10-28 12:14:02,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:14:02,362 INFO L481 AbstractCegarLoop]: Abstraction has 4738 states and 6814 transitions. [2020-10-28 12:14:02,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:14:02,363 INFO L276 IsEmpty]: Start isEmpty. Operand 4738 states and 6814 transitions. [2020-10-28 12:14:02,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-28 12:14:02,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:14:02,368 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:14:02,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:14:02,368 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:14:02,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:14:02,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1352066646, now seen corresponding path program 1 times [2020-10-28 12:14:02,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:14:02,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032108780] [2020-10-28 12:14:02,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:14:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:02,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:02,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:03,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:03,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 12:14:03,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:14:03,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 894 [2020-10-28 12:14:03,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:03,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:03,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:14:03,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:14:03,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 12:14:03,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:03,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:14:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:03,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:03,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:03,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:14:03,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:03,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 12:14:03,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:03,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:03,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:14:03,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:03,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:14:03,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:14:03,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:14:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:03,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:03,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:03,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:14:03,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:03,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-28 12:14:03,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:03,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:03,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:14:03,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:14:03,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 12:14:03,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:14:03,737 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:14:03,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032108780] [2020-10-28 12:14:03,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:14:03,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 12:14:03,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889317520] [2020-10-28 12:14:03,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:14:03,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:14:03,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:14:03,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:14:03,743 INFO L87 Difference]: Start difference. First operand 4738 states and 6814 transitions. Second operand 8 states. [2020-10-28 12:14:28,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:14:28,053 INFO L93 Difference]: Finished difference Result 19276 states and 29588 transitions. [2020-10-28 12:14:28,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 12:14:28,055 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 107 [2020-10-28 12:14:28,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:14:28,166 INFO L225 Difference]: With dead ends: 19276 [2020-10-28 12:14:28,166 INFO L226 Difference]: Without dead ends: 14544 [2020-10-28 12:14:28,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 12:14:28,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14544 states. [2020-10-28 12:14:28,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14544 to 14486. [2020-10-28 12:14:28,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14486 states. [2020-10-28 12:14:28,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14486 states to 14486 states and 20353 transitions. [2020-10-28 12:14:28,707 INFO L78 Accepts]: Start accepts. Automaton has 14486 states and 20353 transitions. Word has length 107 [2020-10-28 12:14:28,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:14:28,709 INFO L481 AbstractCegarLoop]: Abstraction has 14486 states and 20353 transitions. [2020-10-28 12:14:28,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:14:28,710 INFO L276 IsEmpty]: Start isEmpty. Operand 14486 states and 20353 transitions. [2020-10-28 12:14:28,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-28 12:14:28,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:14:28,712 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:14:28,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:14:28,713 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:14:28,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:14:28,713 INFO L82 PathProgramCache]: Analyzing trace with hash -615532594, now seen corresponding path program 1 times [2020-10-28 12:14:28,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:14:28,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016763558] [2020-10-28 12:14:28,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:14:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:28,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:28,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:29,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:29,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 12:14:29,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:14:29,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 822 [2020-10-28 12:14:29,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:29,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:29,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:14:29,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:14:29,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 12:14:29,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:14:29,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:14:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:29,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:29,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:29,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:14:29,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:29,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 12:14:29,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:29,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:29,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:14:29,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:29,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:14:29,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:29,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:14:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:29,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:29,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:29,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 12:14:29,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:29,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-28 12:14:29,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:29,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:29,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:14:29,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:14:29,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:14:29,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:14:30,085 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:14:30,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016763558] [2020-10-28 12:14:30,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:14:30,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:14:30,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084591882] [2020-10-28 12:14:30,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:14:30,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:14:30,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:14:30,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:14:30,091 INFO L87 Difference]: Start difference. First operand 14486 states and 20353 transitions. Second operand 7 states. [2020-10-28 12:14:33,508 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:14:48,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:14:48,402 INFO L93 Difference]: Finished difference Result 43607 states and 63698 transitions. [2020-10-28 12:14:48,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:14:48,404 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-28 12:14:48,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:14:48,527 INFO L225 Difference]: With dead ends: 43607 [2020-10-28 12:14:48,527 INFO L226 Difference]: Without dead ends: 29127 [2020-10-28 12:14:48,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:14:48,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29127 states. [2020-10-28 12:14:49,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29127 to 24322. [2020-10-28 12:14:49,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24322 states. [2020-10-28 12:14:49,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24322 states to 24322 states and 33783 transitions. [2020-10-28 12:14:49,391 INFO L78 Accepts]: Start accepts. Automaton has 24322 states and 33783 transitions. Word has length 111 [2020-10-28 12:14:49,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:14:49,392 INFO L481 AbstractCegarLoop]: Abstraction has 24322 states and 33783 transitions. [2020-10-28 12:14:49,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:14:49,392 INFO L276 IsEmpty]: Start isEmpty. Operand 24322 states and 33783 transitions. [2020-10-28 12:14:49,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-28 12:14:49,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:14:49,397 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:14:49,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:14:49,397 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:14:49,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:14:49,398 INFO L82 PathProgramCache]: Analyzing trace with hash -845304968, now seen corresponding path program 1 times [2020-10-28 12:14:49,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:14:49,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320164623] [2020-10-28 12:14:49,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:14:49,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:49,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:49,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:49,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:50,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:50,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-28 12:14:50,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:14:50,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1443 [2020-10-28 12:14:50,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:50,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:50,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:14:50,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:14:50,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 12:14:50,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:51,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:14:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:51,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:51,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:51,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:14:51,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:51,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:14:51,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:51,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:51,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:51,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:51,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:51,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:51,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:14:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:51,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:51,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:51,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:14:51,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:51,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 12:14:51,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:51,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:51,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:14:51,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:51,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:14:51,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:51,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:14:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:51,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:51,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:51,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 12:14:51,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:51,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-28 12:14:51,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:51,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:51,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:14:51,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:14:51,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:14:51,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:14:51,665 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:14:51,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320164623] [2020-10-28 12:14:51,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:14:51,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:14:51,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629780710] [2020-10-28 12:14:51,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:14:51,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:14:51,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:14:51,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:14:51,668 INFO L87 Difference]: Start difference. First operand 24322 states and 33783 transitions. Second operand 7 states. [2020-10-28 12:15:10,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:15:10,442 INFO L93 Difference]: Finished difference Result 50501 states and 70259 transitions. [2020-10-28 12:15:10,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:15:10,444 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-10-28 12:15:10,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:15:10,540 INFO L225 Difference]: With dead ends: 50501 [2020-10-28 12:15:10,540 INFO L226 Difference]: Without dead ends: 22213 [2020-10-28 12:15:10,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:15:10,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22213 states. [2020-10-28 12:15:11,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22213 to 21970. [2020-10-28 12:15:11,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21970 states. [2020-10-28 12:15:11,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21970 states to 21970 states and 26791 transitions. [2020-10-28 12:15:11,329 INFO L78 Accepts]: Start accepts. Automaton has 21970 states and 26791 transitions. Word has length 214 [2020-10-28 12:15:11,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:15:11,329 INFO L481 AbstractCegarLoop]: Abstraction has 21970 states and 26791 transitions. [2020-10-28 12:15:11,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:15:11,330 INFO L276 IsEmpty]: Start isEmpty. Operand 21970 states and 26791 transitions. [2020-10-28 12:15:11,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-28 12:15:11,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:15:11,336 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:15:11,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:15:11,336 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:15:11,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:15:11,338 INFO L82 PathProgramCache]: Analyzing trace with hash -2109656450, now seen corresponding path program 1 times [2020-10-28 12:15:11,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:15:11,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060129179] [2020-10-28 12:15:11,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:15:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:11,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:11,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:13,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:16,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:16,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-28 12:15:16,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:15:16,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 12:15:16,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:16,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:16,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:15:16,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:15:16,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:15:16,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:16,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:15:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:16,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:16,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:16,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:15:16,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:16,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 12:15:16,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:16,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:16,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:15:16,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:15:16,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:15:16,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:16,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:15:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:16,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:16,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:16,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:15:16,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:16,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-28 12:15:16,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:16,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:16,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:15:16,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:15:16,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-28 12:15:16,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:15:17,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-28 12:15:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:17,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:17,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:17,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 12:15:17,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:17,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 12:15:17,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:17,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:17,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:15:17,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-28 12:15:17,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:15:17,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:17,541 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 36 proven. 92 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:15:17,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060129179] [2020-10-28 12:15:17,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:15:17,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:15:17,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826200503] [2020-10-28 12:15:17,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:15:17,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:15:17,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:15:17,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:15:17,544 INFO L87 Difference]: Start difference. First operand 21970 states and 26791 transitions. Second operand 7 states. [2020-10-28 12:15:21,047 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-28 12:15:33,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:15:33,660 INFO L93 Difference]: Finished difference Result 45116 states and 55266 transitions. [2020-10-28 12:15:33,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:15:33,662 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2020-10-28 12:15:33,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:15:33,722 INFO L225 Difference]: With dead ends: 45116 [2020-10-28 12:15:33,722 INFO L226 Difference]: Without dead ends: 23152 [2020-10-28 12:15:33,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:15:33,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23152 states. [2020-10-28 12:15:34,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23152 to 22908. [2020-10-28 12:15:34,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22908 states. [2020-10-28 12:15:34,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22908 states to 22908 states and 28003 transitions. [2020-10-28 12:15:34,265 INFO L78 Accepts]: Start accepts. Automaton has 22908 states and 28003 transitions. Word has length 271 [2020-10-28 12:15:34,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:15:34,266 INFO L481 AbstractCegarLoop]: Abstraction has 22908 states and 28003 transitions. [2020-10-28 12:15:34,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:15:34,266 INFO L276 IsEmpty]: Start isEmpty. Operand 22908 states and 28003 transitions. [2020-10-28 12:15:34,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-28 12:15:34,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:15:34,276 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:15:34,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:15:34,277 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:15:34,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:15:34,277 INFO L82 PathProgramCache]: Analyzing trace with hash 37121670, now seen corresponding path program 1 times [2020-10-28 12:15:34,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:15:34,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047233480] [2020-10-28 12:15:34,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:15:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:34,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:34,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:34,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:36,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:39,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:39,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 373 [2020-10-28 12:15:39,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:15:39,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-28 12:15:39,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:39,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:39,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:15:39,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:15:39,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-28 12:15:39,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:15:39,646 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:15:39,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:15:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:39,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:39,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:39,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:15:39,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:39,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 12:15:39,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:39,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:39,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:15:39,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:15:39,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:15:39,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:15:39,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:15:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:39,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:39,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:39,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:15:39,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:39,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-28 12:15:39,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:39,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:39,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:15:39,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:15:39,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:15:39,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:15:40,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:15:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:40,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:40,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:40,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:15:40,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:40,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 12:15:40,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:40,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:40,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:15:40,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:15:40,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:15:40,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:40,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-28 12:15:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:40,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:40,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:40,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 12:15:40,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:40,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 12:15:40,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:40,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:40,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:15:40,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:15:40,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 12:15:40,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:40,653 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 234 proven. 6 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-28 12:15:40,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047233480] [2020-10-28 12:15:40,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:15:40,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:15:40,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799709263] [2020-10-28 12:15:40,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:15:40,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:15:40,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:15:40,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:15:40,656 INFO L87 Difference]: Start difference. First operand 22908 states and 28003 transitions. Second operand 7 states. [2020-10-28 12:15:40,799 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:15:57,183 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:16:02,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:16:02,529 INFO L93 Difference]: Finished difference Result 56948 states and 72761 transitions. [2020-10-28 12:16:02,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:16:02,532 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 357 [2020-10-28 12:16:02,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:16:02,647 INFO L225 Difference]: With dead ends: 56948 [2020-10-28 12:16:02,647 INFO L226 Difference]: Without dead ends: 34813 [2020-10-28 12:16:02,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:16:02,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34813 states. [2020-10-28 12:16:03,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34813 to 33673. [2020-10-28 12:16:03,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33673 states. [2020-10-28 12:16:03,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33673 states to 33673 states and 42180 transitions. [2020-10-28 12:16:03,523 INFO L78 Accepts]: Start accepts. Automaton has 33673 states and 42180 transitions. Word has length 357 [2020-10-28 12:16:03,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:16:03,524 INFO L481 AbstractCegarLoop]: Abstraction has 33673 states and 42180 transitions. [2020-10-28 12:16:03,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:16:03,524 INFO L276 IsEmpty]: Start isEmpty. Operand 33673 states and 42180 transitions. [2020-10-28 12:16:03,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-10-28 12:16:03,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:16:03,742 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:16:03,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:16:03,743 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:16:03,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:16:03,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1224181250, now seen corresponding path program 1 times [2020-10-28 12:16:03,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:16:03,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127774935] [2020-10-28 12:16:03,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:16:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:04,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:04,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:05,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:05,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:08,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:08,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 377 [2020-10-28 12:16:08,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:16:08,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4664 [2020-10-28 12:16:08,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:08,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:08,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:16:08,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:16:08,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-28 12:16:08,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:08,974 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:16:08,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:16:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:08,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:08,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:08,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:16:08,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:16:08,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:16:08,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:08,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:08,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:16:08,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:16:08,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:16:08,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:16:09,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:16:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:09,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:09,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:09,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:16:09,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:16:09,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-28 12:16:09,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:09,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:09,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:16:09,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:16:09,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:16:09,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:16:09,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:16:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:09,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:09,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:09,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:09,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:16:09,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:16:09,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-28 12:16:09,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:09,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:09,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:16:09,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:16:09,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:16:09,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:16:09,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-28 12:16:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:09,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:09,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:09,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 12:16:09,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:16:09,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 12:16:09,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:09,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:09,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:16:09,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:16:09,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 12:16:09,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:10,289 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 234 proven. 4 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-28 12:16:10,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127774935] [2020-10-28 12:16:10,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:16:10,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:16:10,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619925524] [2020-10-28 12:16:10,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:16:10,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:16:10,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:16:10,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:16:10,296 INFO L87 Difference]: Start difference. First operand 33673 states and 42180 transitions. Second operand 8 states. [2020-10-28 12:16:16,010 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-28 12:16:36,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:16:36,559 INFO L93 Difference]: Finished difference Result 96676 states and 125469 transitions. [2020-10-28 12:16:36,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:16:36,566 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 361 [2020-10-28 12:16:36,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:16:36,846 INFO L225 Difference]: With dead ends: 96676 [2020-10-28 12:16:36,846 INFO L226 Difference]: Without dead ends: 62909 [2020-10-28 12:16:36,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:16:37,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62909 states. [2020-10-28 12:16:38,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62909 to 61233. [2020-10-28 12:16:38,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61233 states. [2020-10-28 12:16:39,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61233 states to 61233 states and 77763 transitions. [2020-10-28 12:16:39,535 INFO L78 Accepts]: Start accepts. Automaton has 61233 states and 77763 transitions. Word has length 361 [2020-10-28 12:16:39,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:16:39,536 INFO L481 AbstractCegarLoop]: Abstraction has 61233 states and 77763 transitions. [2020-10-28 12:16:39,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:16:39,537 INFO L276 IsEmpty]: Start isEmpty. Operand 61233 states and 77763 transitions. [2020-10-28 12:16:39,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2020-10-28 12:16:39,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:16:39,552 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:16:39,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:16:39,552 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:16:39,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:16:39,553 INFO L82 PathProgramCache]: Analyzing trace with hash -55962522, now seen corresponding path program 1 times [2020-10-28 12:16:39,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:16:39,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533641464] [2020-10-28 12:16:39,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:16:39,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:39,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:40,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:41,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:43,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:43,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:44,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:44,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 389 [2020-10-28 12:16:44,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:16:44,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 12:16:44,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:44,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:44,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:16:44,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:16:44,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-28 12:16:44,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:44,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:16:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:44,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:44,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:44,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:16:44,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:16:44,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 12:16:44,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:44,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:44,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:16:44,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:16:44,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:16:44,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:44,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:16:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:44,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:45,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:45,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:16:45,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:16:45,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-28 12:16:45,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:45,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:45,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:16:45,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:16:45,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:16:45,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:45,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:16:45,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:45,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:45,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:45,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:45,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:16:45,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:16:45,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-28 12:16:45,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:45,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:45,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:16:45,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:16:45,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:16:45,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:45,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-28 12:16:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:45,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:45,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:45,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 12:16:45,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:16:45,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-28 12:16:45,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:45,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:45,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:16:45,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:16:45,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:16:45,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:45,916 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 250 proven. 4 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-28 12:16:45,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533641464] [2020-10-28 12:16:45,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:16:45,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:16:45,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790668578] [2020-10-28 12:16:45,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:16:45,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:16:45,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:16:45,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:16:45,919 INFO L87 Difference]: Start difference. First operand 61233 states and 77763 transitions. Second operand 8 states. [2020-10-28 12:16:46,068 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 12:16:47,414 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 66